Maharashtra: Lonar lake colour changes to pink; experts, locals surprised
Aurangabad: The colour of water in Maharashtra's Lonar lake, formed after a meteorite hit the Earth some 50,000 years ago, has changed to pink with experts attributing it to the salinity and presence of algae in the water body.
Located around 500 km from Mumbai, the Lonar lake in Buldhana district is a popular tourist hub and also attracts scientists from all over the world.
Of late, the change in colour of water of the lake, having a mean diameter of 1.2 km, has not only surprised locals, but also nature enthusiasts and scientists.
Experts say this is not the first time that the colour change has happened, but this time it is more glaring.
The lake, which is a notified national geo-heritage monument, has saline water with pH of 10.5, Gajanan Kharat, member of the Lonar lake conservation and development committee, told PTI.
"There are algae in the water body. The salinity and algae can be responsible for this change," he said.
"There is no oxygen below one meter of the lake's water surface. There is an example of a lake in Iran, where water becomes reddish due to increase in salinity," he noted.
Kharat said the level of water in the Lonar lake is currently low as compared to the few past years and there is no rain to pour fresh water in it.
"The low level of water may lead to increased salinity and change in the behaviour of algae because of atmospheric changes...this may be the reason for colour change. This is not the first time that the colour of water has changed," he said.
Dr Madan Suryavanshi, head of the geography department of Aurangabad's Dr Babasaheb Ambedkar Marathwada University, said looking at the scale of this colour change, "this cant be a human intervention".
"In case of a natural phenomenon, there are fungi which generally give a greenish colour to water most of the times. This (the current colour change) seems to be a biological change in the Lonar crater," he said.
During the lockdown phase, there may not have been any disturbance to water which led to this change, he said.
"Season-wise changes occur in water and this might be case with the Lonar lake. We can examine the change if we go there in a week...then we can say more about the change," he said.
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Delhi schools suspend outdoor activities, plan early steps to shield students from heat
New Delhi (PTI): To shield students from heat-related ailments amid soaring temperatures and harsh afternoon sun, schools across Delhi have begun taking precautionary measures by suspending outdoor activities, shifting assemblies indoors, with some even considering early closure for junior classes.
From indoor games and hydration breaks to ORS consumption and modified dispersal timings, schools are tightening measures as the city braces for prolonged heatwave conditions.
Sudha Acharya, principal at ITL Public School in Dwarka, said all outdoor activities, including morning assembly and games, have been shifted to the school's multipurpose hall.
“We have issued an advisory to all parents to take precautionary measures before sending their children to school. We are also planning to close the school from classes 1 to 8 from May 14 onward if the weather conditions worsen," she said.
Mallika Preman, principal at Tagore International School in East of Kailash, said students have been advised to remain indoors during peak afternoon hours and keep themselves hydrated.
“We have suspended all outdoor activities, and students now play indoor games like carrom and chess. We have also modified the dispersal system so that students are not brought out until their parents arrive at their designated collection areas,” Preman said.
“This reduces their exposure to heat in the afternoon. Students have also been advised to wear caps or use umbrellas during dispersal,” she added.
Ritu Sharma, principal at Sovereign Public School in Rohini, said that teachers have been asked to closely monitor students for signs of heat exhaustion.
“Our priority is to ensure that children remain safe and comfortable during school hours. We are encouraging them to carry water bottles, avoid direct sun exposure and immediately report any discomfort. We have also arranged shaded rest areas and indoor engagement activities to reduce heat exposure,” she said.
The Directorate of Education (DoE) has launched a ‘Beat the Heat’ initiative for government, government-aided and private unaided recognised schools in Delhi in view of the heatwave conditions forecast by the India Meteorological Department (IMD).
The initiative follows the Heat Wave Action Plan issued by the Delhi Disaster Management Authority (DDMA) and aims to protect students from heat-related illnesses while promoting hydration, environmental awareness and care for animals and birds.
Under the initiative, schools have been directed to ring a 'hydration bell' daily in the penultimate period, during which every student will consume oral rehydration solution (ORS). Teachers will also briefly explain the importance of staying hydrated.
Schools have also been encouraged to create 'cool corners' with earthen water pots, promote a ‘one child-one plant’ green mission and appoint student volunteers as 'Jal Mitras' to place and refill water bowls for birds and stray animals, the advisory said.
According to the DoE, the other measures include ensuring safe drinking water stations, spreading awareness on heat stroke prevention, training teachers to identify symptoms of heat stress, and prominently displaying emergency helpline numbers across campuses.
The heads of schools have been asked to submit an action taken report on the implementation of the measures to their respective district offices by April 28, it said.
